need somebody to tell me in their own words(250 minimum)

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need somebody to tell me in their own words(250 minimum) what Parabolic
shapes in the real world. Do not just make this up off the top of your head. The St Louis Arch, for example, is NOT a parabola—it is an inverted catenary. Please cite a source confirming that your example is, indeed, parabolic and not some other more exotic curve.

According to Wikipedia, that great internet source of both information and misinformation, “In nature, approximations of parabolas and paraboloids are found in many diverse situations.”

 
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A brace for a shelf has the shape of a right triangle. Its hypotenuse is 20

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A brace for a shelf has the shape of a right triangle. Its hypotenuse is 20

inches long and the two legs are equal in length. How long are the legs of theâ triangle?

The legs of the triangle are both_________?______ inches long.

 
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Palo Alto College is planning to construct a rectangular parking

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Palo Alto College is planning to construct a rectangular parking lot
on land bordered on one side by a highway. The plan is to use 560 feet of fencing to fence off the other three sides. What dimensions should the lot have if the enclosed area is to be aâ maximum?

The width is ____?____feet. The length is ____?_____feet.

 
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Suppose that the manufacturer of a DVD player has foundâ that

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Suppose that the manufacturer of a DVD player has foundâ that, when
the unit price is pâ dollars, the revenue Râ (in dollars) as a function of the price p is R(p)=-2.5p^2+700p

â(a) For what price will the revenue beâ maximized?
â(b) What is the maximumâ revenue?

 
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